[Epic 4G General] Jed Dignazio:
To use these codes, you simply open up your phone dialer, and type them in.

##786#. Tells you about the life of mins used and data. Also tells you if your phone is a refurb or not.

*#28346# - Audio Tuning

Has a lot of options including filters, boosters, equalizers and others. Can Mute Bootsounds, keytones, and other systems

*#INFO*1111# - Testing

Phone information/Battery information/Battery history/Usage statistics

Very useful diagnostics

##RTN# - Real-Time Network (RTN)

Lots of useful information, like the Life timer / calls and Life Byte usage stats

*#DATA*727336*# - DataCreate

Call log/System Space/User Space/Phone Book/Schedule/Message/Ring tone/Screen/IMEI/ESN/Error log

Very useful information!!!

*#0228# - BatteryStatus

Very useful real-time battery statistics!

##UPST# - PhoneUtil - UART/USB

Universal Asychronous Receiver/Transmitter / Universal Serial Bus

Most likely controls how you connect technician testing equipment to test out the UART/USB subsystems

##DATA# - Data Programming - Requires MSL

User Name/Advanced/Restore/Enable HFA/DSA Server/MMSC/URL/Multimedia/WorkMode/WiMAX

I don't have my MSL (Master Subsidy Lock) code, so I can't test this

##DEBUG# - Debug Menu - Requires MSL

Debug Screen/Test Calls/RC Data/HDR/1X Selection/Voice Privacy/DTMF Set/Korea Mode Set

I don't have my MSL (Master Subsidy Lock) code, so I can't test this

##AKEY# - Data A key menu - Requires MSL

I don't have my MSL (Master Subsidy Lock) code, so I can't test this

##<MSL># - Master Subsidy Lock - Requires MSL

Program your Mobile Device Number(MDN) and Mobile Station ID(MSID)

The <MSL> is your phone's Master Subsidy Lock, a 6 digit code, you can sometimes get it from Sprint

##GPSCLRX# - Reset the GPS - Requires MSL

I don't have my MSL (Master Subsidy Lock) code, so I can't test this

##SCRTN# - Changes DSA back to Factory - Requires MSL

I don't have my MSL (Master Subsidy Lock) code, so I can't test this

##TTY# - TTY TestMode

*#0842# - Device Test - Vibration Test

*#0673# - MelodyTest

*#7780# - Factory data reset

*#232331# - BluetoothTest

*#2664# - Touchscreen Accuracy Test

Nice if you want to see how accurate your touchscreen is

*#0283# - ServiceMode - PACKET LOOPBACK

Need to hit home to get out - I couldn't get this to do anything but it could be the data packet that you sent coming back to you on the loopback device

*#767*3855# - Factory Format - WARNING!!!

Will go to Hands Free Activation

Nice if you'd like to reactivate your phone, it will do so automatically

*#197328640# - ServiceMode - Menu key to bring up menu - WARNING!!!

Will turn off your radio - Not sure what this does

*#0011# - ServiceMode - Force Closes - Menu key to bring up menu

Will turn on your radio, and then reboot

*#32489# - ServiceMode - Force Closes - Menu key to bring up menu

Doesn't seem to affect the radio

*#2580# - ServiceMode - Not sure what this does

*#0782# - RTCTimeRead - Displays Date and Time

*#745# - Sec_RIL_Dump - Has the LogFileList

Copy to phone memory/Copy to SD card(grayed out)/View Ril Log(grayed out)/Clear Ril Log/Exit

Probably dumps the logs for the Radio Interface Layer (RIL) between the Operating System and the phone's radio and modem

I haven't tested a dump yet

*#9900# - SysDump

copy logcat/dumpstate/dumpsys/enable debug log/copy/watchdogdumpstatelog

Probably dumps the logs for the Operating System kernel

I haven't tested a dump yet